After a few hours of use, the field found A500 broke again! (+lets talk about RAM tests) @adriansdigitalbasement2
After a few hours of use, the field found A500 broke again! (+lets talk about RAM tests)  @adriansdigitalbasement2
Uploaded November 2023 | Updated September 2026, 3 weeks ago
Well that didn't take long! The Field Found A500 had barely been back together and working when it broke again, this time while I was using it!

So let's figure out what broke so it can be fixed, and let's talk about some of the ways RAM chips fail and how to detect those errors.

Field Found A500 series:
Part 1: youtu.be/V-wNbku3CeI
Part 2: youtu.be/BOoIlKSTmjk
Part 3: youtu.be/3gW4ftRPurU (where I we work on an fix the external RAM card)

-- Video Links

Adrian's Digital Basement Merch store:
my-store-c82bd2-2.creator-spring.com

Support the channel on Patreon:
patreon.com/adriansdigitalbasement

Adrian's Digital Basement (Main Channel)
youtube.com/channel/UCE5dIscvDxrb7CD5uiJJOiw

-- Tools

Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.1602/.f

O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
rigolna.com/products/digital-oscilloscopes/1000z

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
aliexpress.com/item/33000308958.html

TS100 Soldering Iron:
amzn.to/2K36dJ5
ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853

EEVBlog 121GW Multimeter:
eevblog.com/product/121gw

DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672

Magnetic Screw Holder:
amzn.to/3b8LOhG
harborfreight.com/4-inch-magnetic-parts-tray-90566.html

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
ebay.com/itm/14-16-18-20-24-28-32-40-pin-IC-Test-Universal-ZIF-Socket-Fs/303206721971

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
retrotink.com

Plato (Clone) Side Cutters: (order five)
ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184

Heat Sinks:
aliexpress.com/item/32537183709.html

Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI

--- Links

My GitHub repository:
github.com/misterblack1?tab=repositories

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
commodorecomputerclub.com

--- Instructional videos

My video on damage-free chip removal:
youtube.com/watch?v=XQVjwPsVFd8

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino
After a few hours of use, the field found A500 broke again! (+lets talk about RAM tests)0103 A dead Mac IIfx, a fun cookbook and clock replacementsPart 4: And with that, the mystery jack TV is fully fixed!0078 A broken Book 8088 laptop, Voodoo 2 frustration and some TV partsApple Profile Hard Drive forensics and testing0053 The very rare (for North America) C64G and I build a couple miniature retro devicesCasual Atari ST Triage and FixA big box of mystery computer partsApple 400k Single Sided Floppy Drive RefreshPreserving the ROMs on the best RAM tester ever made (RAMCheck)Looking for hidden features in a LASER CGA card0057 A mystery data recorder, a hurt Sun SPARCstation IPC and a MEGA little TV
Adrians Digital Basement ][ |

After a few hours of use, the field found A500 broke again! (+let's talk about RAM tests)

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